Transmitting Power: 400mW 
Frequency: 2.2G/2.3G/2.4G
Dimension: 53*41*14mm
Channel: 8 channels, Vidoe and Audio Synchronization. 
Distance:(Open/unobstructed Space) : 800~1500m
Package Including: 12 channel Receiver, Transmitter, Two pcs of small antennas, Transmitter connecting cable, Video/audio cable
Digital Display